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@@ -8,20 +8,87 @@
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string(TIMESTAMP current_year "%Y")
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set(O3DE_COPYRIGHT_YEAR ${current_year} CACHE STRING "Open 3D Engine's copyright year")
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-set(O3DE_VERSION_STRING "0.0.0" CACHE STRING "Open 3D Engine's version")
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-set(O3DE_DISPLAY_VERSION_STRING "00.00" CACHE STRING "Open 3D Engine's display version")
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-set(O3DE_BUILD_VERSION 0 CACHE STRING "Open 3D Engine's build number")
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-set(O3DE_ENGINE_NAME "o3de" CACHE STRING "Open 3D Engine's engine name")
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-
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-# Optional environment overrides
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-if(NOT "$ENV{O3DE_VERSION}" STREQUAL "")
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- set(O3DE_VERSION_STRING "$ENV{O3DE_VERSION}")
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-endif()
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-
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-if(NOT "$ENV{O3DE_DISPLAY_VERSION}" STREQUAL "")
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- set(O3DE_DISPLAY_VERSION_STRING "$ENV{O3DE_DISPLAY_VERSION}")
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-endif()
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-
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-if(NOT "$ENV{O3DE_BUILD_VERSION}" STREQUAL "")
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- set(O3DE_BUILD_VERSION "$ENV{O3DE_BUILD_VERSION}")
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-endif()
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+
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+# avoid reading engine.json multiple times
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+ly_file_read("${LY_ROOT_FOLDER}/engine.json" tmp_json_data)
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+set_property(GLOBAL PROPERTY O3DE_ENGINE_JSON_DATA ${tmp_json_data})
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+unset(tmp_json_data)
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+
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+#! o3de_read_engine_default: Read a field from engine.json or use the default if not found
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+# \arg:output_value - name of output variable to set
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+# \arg:key - name of field in engine.json
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+# \arg:default_value - value to use if neither environment var or engine.json value found
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+macro(o3de_read_engine_default output_value key default_value)
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+ get_property(engine_json_data GLOBAL PROPERTY O3DE_ENGINE_JSON_DATA)
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+ string(JSON tmp_value ERROR_VARIABLE manifest_json_error GET ${engine_json_data} ${key})
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+
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+ # unset engine_json_data because we're in a macro
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+ unset(engine_json_data)
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+
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+ if(manifest_json_error)
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+ message(WARNING "Failed to read ${key} from \"${LY_ROOT_FOLDER}/engine.json\" : ${manifest_json_error}")
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+ set(tmp_value ${default_value})
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+ endif()
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+
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+ ly_set(${output_value} ${tmp_value})
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+ set_property(GLOBAL PROPERTY ${output_value} ${tmp_value})
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+
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+ # unset tmp_value because we're in a macro
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+ unset(tmp_value)
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+endmacro()
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+
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+#! o3de_set_major_minor_patch_with_prefix: Parses a SemVer string and sets
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+# separate major, minor and patch global properties.
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+# e.g. given "1.2.3" and prefix VER the following properties are set:
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+# VER_MAJOR 1
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+# VER_MINOR 2
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+# VER_PATCH 3
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+#
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+# \arg:prefix - prefix for cmake variable names
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+# \arg:version_string - input string in SemVer format e.g. "1.2.3"
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+function(o3de_set_major_minor_patch_with_prefix prefix version_string)
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+ string(REPLACE "." ";" version_list ${version_string})
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+ list(GET version_list 0 major)
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+ list(GET version_list 1 minor)
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+ list(GET version_list 2 patch)
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+ set_property(GLOBAL PROPERTY ${prefix}_MAJOR ${major})
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+ set_property(GLOBAL PROPERTY ${prefix}_MINOR ${minor})
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+ set_property(GLOBAL PROPERTY ${prefix}_PATCH ${patch})
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+endfunction()
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+
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+#! o3de_get_major_minor_patch_with_prefix: Get the major, minor and patch
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+# for global properties with the specified prefix and store the output
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+# in the provided variables.
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+#
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+# Example storing O3DE_VERSION_MAJOR in major, O3DE_VERSION_MINOR in minor
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+# and O3DE_VERSION_PATCH in patch and print the SemVer:
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+#
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+# o3de_get_major_minor_patch_with_prefix(O3DE_VERSION major minor patch)
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+# message(INFO "O3DE version is ${major}.${minor}.${patch}")
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+#
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+# \arg:prefix - global properties prefix
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+# \arg:output_major - output for <prefix>_MAJOR property
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+# \arg:output_minor - output for <prefix>_MINOR property
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+# \arg:output_patch - output for <prefix>_PATCH property
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+macro(o3de_get_major_minor_patch_with_prefix prefix output_major output_minor output_patch)
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+ get_property(${output_major} GLOBAL PROPERTY ${prefix}_MAJOR )
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+ get_property(${output_minor} GLOBAL PROPERTY ${prefix}_MINOR )
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+ get_property(${output_patch} GLOBAL PROPERTY ${prefix}_PATCH )
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+endmacro()
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+
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+# set engine.json variables and global properties
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+# these are not cached variables and cannot be configured by the user
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+o3de_read_engine_default(O3DE_VERSION_STRING "version" "0.0.0")
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+o3de_read_engine_default(O3DE_DISPLAY_VERSION_STRING "display_version" "00.00")
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+o3de_read_engine_default(O3DE_BUILD_VERSION "build" 0)
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+o3de_read_engine_default(O3DE_ENGINE_NAME "engine_name" "o3de")
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+
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+# set O3DE_VERSION_MAJOR/MINOR/PATCH global properties
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+o3de_set_major_minor_patch_with_prefix(O3DE_VERSION ${O3DE_VERSION_STRING})
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+
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+# set variables for INSTALL targets
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+# these ARE cached variables and can be configured by the user
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+o3de_set_from_env_with_default(O3DE_INSTALL_VERSION_STRING O3DE_INSTALL_VERSION "@O3DE_VERSION_STRING@" CACHE STRING "Open 3D Engine's version for the INSTALL target")
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+o3de_set_from_env_with_default(O3DE_INSTALL_DISPLAY_VERSION_STRING O3DE_INSTALL_DISPLAY_VERSION "@O3DE_DISPLAY_VERSION_STRING@" CACHE STRING "Open 3D Engine's display version for the INSTALL target")
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+o3de_set_from_env_with_default(O3DE_INSTALL_BUILD_VERSION O3DE_INSTALL_BUILD_VERSION "@O3DE_BUILD_VERSION@" CACHE STRING "Open 3D Engine's build number for the INSTALL target")
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+o3de_set_from_env_with_default(O3DE_INSTALL_ENGINE_NAME O3DE_INSTALL_ENGINE_NAME "@O3DE_ENGINE_NAME@" CACHE STRING "Open 3D Engine's engine name for the INSTALL target")
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Alex Peterson